Process for the preparation of modification I of n-(1-methylethylaminocarbonyl)-4-(3-methylphenylamino)-3-pyridinesulfonam-ide
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United States of America Patent
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Issued Date -
May 11, 2006
app pub date -
Jul 7, 2003
filing date -
Jul 19, 2002
priority date (Note) -
Abandoned
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Abstract
The invention relates to a new process for the preparation of modification I of torasemide by precipitation with acids from an alkaline extract of the original reaction mixture of the last phase in the synthesis of torasemide.
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